Results 51 to 60 of about 10,641 (265)
Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing
FEBS Letters, EarlyView.Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley +1 more source
Ciência Florestal, 2012 http://dx.doi.org/10.5902/198050985091This study investigated the floristic composition and the tree community structure in a secondary Araucaria Forest fragment in the Southern Plateau Region of Santa Catarina state, Brazil, the floristic context of ...
Ana Carolina da Silva +5 more
doaj +1 more source
A rigorous definition of axial lines: ridges on isovist fields [PDF]
, 2003 We suggest that 'axial lines' defined by (Hillier and Hanson, 1984) as lines of uninterrupted movement within urban streetscapes or buildings, appear as ridges in isovist fields (Benedikt, 1979). These are formed from the maximum diametric lengths of the
Batty, M, Carvalho, R
core +1 more source
Photoelastic force measurements in granular materials
, 2016 Photoelastic techniques are used to make both qualitative and quantitative measurements of the forces within idealized granular materials. The method is based on placing a birefringent granular material between a pair of polarizing filters, so that each ...
Frocht M. +7 more
core +1 more source
Anomalous shell effect in the transition from a circular to a triangular billiard [PDF]
, 2008 We apply periodic orbit theory to a two-dimensional non-integrable billiard system whose boundary is varied smoothly from a circular to an equilateral triangular shape.
H. Nishioka +9 more
core +4 more sources
Time after time – circadian clocks through the lens of oscillator theory
FEBS Letters, EarlyView.Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo +2 more
wiley +1 more source
Ciência Rural, 2009 Os objetivos deste estudo foram ajustar e selecionar funções de densidade probabilística que caracterizem a estrutura diamétrica desse fragmento e das espécies: Cedrela fissilis (Cedro), Luehea divaricata (Açoita Cavalo), Gochnatia polymorpha (Cambará ...
Sebastião do Amaral Machado +6 more
doaj +1 more source
FLORESTA, 2018 This study aimed to analyze the diametric structure of the stand and of five species of highest importance value for a Caatinga area, located in the municipality of Floresta, state of Pernambuco, Brazil. The work was developed from 40 sample units of 400 m² each, systematically allocated.
Robson Borges de Lima +5 more
openaire +2 more sources
In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS
FEBS Letters, EarlyView.We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka +11 more
wiley +1 more source
Revista Árvore, 2007 A candeia vem sendo submetida a uma exploração desordenada, devido ao seu elevado potencial econômico. A solução para o controle da exploração de forma desordenada é o desenvolvimento e a execução de planos de manejo florestal, sendo, o conhecimento da ...
Agostinho Lopes de Souza +3 more
doaj +1 more source